H codes: Behavioral health and substance use services

Alcohol and drug treatment, mental health and related services, mostly used by state Medicaid agencies.

Active HCPCS H codes

Each opens its own page with CMS’s full descriptor, Medicare indicators and dates.

Source and release

Data release
HCPCS Level II · October 2026
Effective date
Oct 1, 2026
Publisher
CMS

This list is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes, imported from CMS’s October 2026 HCPCS file and checked against it.

Frequently asked questions

What are HCPCS H codes?

HCPCS H codes cover alcohol and drug treatment, mental health and related services, mostly used by state Medicaid agencies.

How many HCPCS H codes are there?

CMS’s October 2026 HCPCS file lists 94 active HCPCS H codes.

Are terminated HCPCS H codes listed?

None of the HCPCS H codes in this file has been terminated.